Udokotela wakho wezame cishe uncoma izibuko zekhwalithi ukuze avikele amehlo akho emisebeni yokukhanya yomsindo omazayo ekhishwa ilanga, ngoba ukukhanya kwe-ultraviolet kungasiza ekuthuthukiseni ukwelashwa kwejwabu leso, i-cataracts, i-pinguecula ne-pterygium. Kodwa kuthiwani nge-wavewththth of light? Ukukhanya okwesibhakabhaka kungabangela ukulimala kwe-oxidative emehlweni, futhi kungase kudlale indima ebalulekile ekwenzeni ukubola kwe-macular okuhlobene nobudala, okungaholela ekulahlekeni kombono obalulekile.
Njengoba uvikela amehlo akho emiphumeleni eyingozi yokukhanya kwe-ultraviolet, kufanele yini uvikeleke ekukhanyeni okwesibhakabhaka?
Okuyisisekelo
Amehlo akho azwela eqenjini elincane lama-frequencies okuthiwa "i-spectrum ebonakalayo yokukhanya." Ukukhanya okubonakalayo okubonakalayo okukwazi ukubonwa ngamehlo omuntu-kuqukethe ubude obukhulu obude obuhlukahlukene. Ukukhanya okuluhlaza okwesibhakabhaka kunomkhawulo omfushane kakhulu futhi kutholakala ngeso lomuntu. Akukona kuphela ukunikeza ukukhanya okuyisisekelo emhlabeni wethu, ukukhanya okwesibhakabhaka kusiza nokwandisa imizwa yenhlalakahle. Kodwa ukuvezwa kokukhanya okukhulu okwesibhakabhaka kungalimaza emehlweni.
Imithombo
Amadivayisi amaningi asetshenziswayo namuhla, njengamafoni, amaphilisi, namakhomphyutha e-laptop, uye wandisa kakhulu ukuvezwa kwethu ekukhanyeni okwesibhakabhaka. Omunye umthombo wokukhanya okwesibhakabhaka ubuchwepheshe obusebenzayo obunamandla ngendlela yama-light light fluorescent kanye nezibani ze-LED. Ukucwaninga kunqume ukuthi i- lens ngaphakathi kweso, futhi i-pigment ngemuva kweso, inikeza isivikelo ngokukhanya okuluhlaza okwesibhakabhaka.
Kodwa le ndlela yokuzivikela iphela isikhathi esifushane sokuvezwa kokukhanya okuluhlaza okwesibhakabhaka, nangesikhathi samahora.
Ukukhanya okuMbala okwesibhakabhaka ne-Macular
Mhlawumbe isongo esikhulu sokukhanya okwesibhakabhaka indima ebambe iqhaza ekuthuthukiseni ukuguqulwa kwe-macular okuhlobene neminyaka , ikakhulukazi ngesimo se-photo-oxidation.
Abantu abanengozi ephakeme yalesi sifo kufanele bavikele amehlo abo ekukhanyeni okukhanya okwesibhakabhaka. Abanye odokotela batusa ukukhanya kwe-halogen njengenye indlela kwezinye izinhlobo zokukhanyisa.
Muva nje, inkampani ebizwa ngokuthi i-Eye Solutions iye yasungula umkhiqizo ukusivikela ekukhanyeni okwesibhakabhaka-hhayi nje ngaphandle, kodwa futhi ngaphakathi. I-lens ibizwa ngokuthi i-Blu-Tech lense futhi iqukethe i-pigment ehlunga ukukhanya okwesibhakabhaka ngaphandle kokuthinta umqondo wombala. Lokhu kungaba yindlela enhle kubantu abane-macular degeneration noma labo abasengozini yokuthuthukisa lesi sifo. Kungaba nokubaluleka kubantu abaye bahlinzwa ngokuhlinzwa kwe- cataract kusukela ama-lens we-intraocular asetshenziswe ngesikhathi sokuhlinzwa kwe-cataract angeke abe nokuvikelwa okuningi ngokukhanya okwesibhakabhaka.
I-Blue Light ne-Melatonin
I-Melatonin iyi-hormone yokulala emizimbeni yethu esiza ukulawula imiqondo yethu ye-circadian. Amehlo ethu aqukethe ama-receptors aqukethe isithombe sokuguquka okuthiwa i-melanopsin esicabangelayo ekukhanyeni okwesibhakabhaka. Lawa maseli anika ulwazi emzimbeni wethu olawula umuzwa wethu wosuku nobusuku. Ukukhanya okuhlaza okwesibhakabhaka kuboniswe abacwaningi ukuba bakhulise ngempela ukukhathazeka nemizwelo phakathi nosuku, kodwa ukuvezwa okungapheli kokukhanya okwesibhakabhaka ebusuku kunganikeza imiyalezo ebuchosheni bethu ukunciphisa ukucinwa kwe-melatonin, okusitshela ukuba siphakamise futhi siqaphele-singase siphazamise isigqi sangaphakathi.
Okufanele Ukwazi
Nakuba ukukhanya okuluhlaza okwesibhakabhaka kuhlanganiswe ngokungafani nenengozi yokwanda yesifo somdlavuza, isifo sikashukela, isifo senhliziyo, ukukhuluphala, nokuphazamiseka esiyingqayizivele, sisalokhu kuyingxenye ebalulekile yokukhanyisa kwemvelo nokufakelwa. Buza i-optometrist yakho noma i-ophthalmologist uma ubungozi obunzima bokubhekene nezimo zamehlo ezingase zihlotshaniswe nokukhanya okukhanyayo okwesibhakabhaka. Lokhu kuvame ukuhlanganisa ukubuyekezwa komlando womndeni wakho kanye nokuhlolwa kwe-retinal eye dilated.
Njengalokhu njalo, gcina amathiphu alandelayo engqondweni ngokuvikelwa kwamehlo UV:
- Nciphisa ukushisa kwelanga elandisiwe lapho kunokwenzeka.
- Gqoka izigqoko ezinamaphesenti amakhulu ngenkathi ilanga.
- Cabanga nge-lens ye-melanin ene-pigmented polarized. Nakuba kungabangela ushintsho ekuboneni kombala, ludonsa ukukhanya okukhanyayo okukhanyisa ngaphandle.
- Nciphisa ukukhanya okukhanya okwesibhakabhaka ngokugcina amadivaysi edijithali ngaphandle kwekamelo lokulala.
- Nciphisa ukuphequlula kwe-intanethi kusihlwa ukunciphisa ukukhanya okwakubonakala okwesibhakabhaka kusuka kwesikrini sakho sekhompyutheni kanye nezinguquko ezingase zibe khona kwisigqi se-circadian.
Imithombo:
> Tolentino, Michael > no > Gary Morgan. Ukubaluleka kwamadivaysi e-electronic, ama-"green" ama-light ampbs ukukhanya kwe-blue light. Izindaba Zokuqala Ze-Optometry News, Oct 2012, iphepha 18-19.
> Rozanowska, M et al. I-reactivity ebomvu eyenziwe ngokukhanya kwe-retinal age pigment. I-in vitro isizukulwane sezinhlobo zomoya osebenzayo. I-Journal of Chemistry Chemistry, 11 Aug 1995, iphepha 18825-30.